Split Floor-Mounted Cooling System Operation Care Installation Manual

Transcription

1 Split Floor-Mounted Cooling System Operation Care Installation Manual CT14TSA CT13TSA CT12TSA CT34TSA CT1TSA CT14TSA-LA CT13TSA-LA CT12TSA-LA CT34TSA-LA CT1TSA-LA Apex S Susana Road Rancho Dominguez, CA Tel: (800) Fax: (310) info@groupapex.com

2 Read and save these instructions Read and save these instructions Important Safety Information 1

3 Table of Contents Cellar Construction Guide Features & Specifications Temperature & Humidity Care Guide User Troubleshooting Installer s Instructions Electrical Wirings Warranty

4 Cellar Construction Guide This is only a guide and shall be considered as the minimum requirements. All interior walls, ceilings and floors shall have a vapor barrier and a minimum of R13 insulation. All exterior walls and ceiling shall have a vapor barrier and a minimum of R19 insulation. The vapor barrier shall be installed on the warm side of insulation. All joints, door frames, electrical outlets or switches and any pipes or vents that go through the cellar shall be sealed to prevent air and moisture leaking into the cellar. Concrete, rock, and brick are not insulations or vapor barriers. Doors shall be of a minimum size, insulated to at least R13 and tightly sealed with high quality weather stripping. Be sure to seal the bottom of the door and fill gap between the door s frame and wall before installing the cap molding. In order to maintain 55 F in the wine cellar, the ambient temperature surrounding the cellar shall not exceed the temperature of the cellar by more than 25 F. No cellar walls shall receive direct sun or strong wind. Lighting shall be of low wattage, with a timer to insure lights are not left on when the cellar is not occupied. The cooling system will not be able to maintain the proper temperature if fresh moisture-laden air is constantly being introduced to the cellar. Symptoms of this condition are; cooling unit runs all the time with only a slight reduction in temperature and/or water overflows from the cooling unit. Because of the temperature difference between the inside and outside, very small cracks can allow large amounts of outside air to enter into the cellar. Please be aware that moisture can pass through solid concrete, paint and wood. Often a newly constructed cellar contains fresh wood, paint, concrete and other building materials. These materials contain large amounts of moisture. When placed into operation in this type of environment, the system will work harder to remove this extra moisture resulting in increased run time. 3

5 Features and Specifications CELLARTEC split floor-mounted cooling systems CT14~1TSA and CT14~1TSA-LA are designed to provide a cold environment between 50~65 F with a humidity range within 50~70% RH for a properly insulated wine cellar. These temperature and humidity ranges are optimized for long term storage of wine like that in natural caves. TSA evaporator units are designed for mounting on the floor, making them an ideal choice for quick and convenient installation. TSA cooling systems consist of a remote condensing unit and an evaporator unit and they are connected by a liquid line and an insulated suction line. TSA condensing units can be located away from the wine cellars up to 50 ft so that noise and compressor vibration are isolated. Fig. 1 TSA Split Floor-Mounted Cooling System CAUTION If the condensing unit will operate below 50 F, install a low ambient condition kit. NOTE The cooling capacity is determined under 55 F cellar temperature, 75 F cellar ambient temperature and 90 F condensing unit ambient temperature, with R13 interior and R19 exterior insulations. Higher ambient temperatures or lower insulations will cause reducing capacity and the cellar 4

6 temperature may not be maintained at 55 F. The specifications are listed as follows: Model No. Capacity (Btu/h) / Airflow (CFM) Max Cellar Size (cu ft) CT14TSA CT14TSA-LA 2500 / CT13TSA CT13TSA-LA 4500 / CT12TSA CT12TSA-LA 6500 / CT34TSA CT34TSA-LA 8500 / CT1TSA CT1TSA-LA / NOTE LA refers the unit equipped with a low ambient kit. For further info, see Fig. 3~7. 5

7 1. Temperature Setting Temperature and Humidity Set the temperature at 55 F for the optimum aging of wine On initial start-up, the time required to reach the desired temperature will vary, depending on the quantity of bottles, temperature setting and the surrounding temperature. Allow 24 hours to stabilize the temperature for each new temperature setting operation. Fig. 2 Touch-screen Thermostat NOTE: This thermostat must be installed inside a wine cellar You can monitor and control the cellar temperature anywhere. You can set up notifications of low & high temperature and low & high humidity. 2. Initial Settings When the thermostat is powered first time touch Next to select the default settings. 6

8 7

9 Touch I ll do it later to skip the Wi-Fi network connecting. 8

10 3. Setting the fan Touch FAN to display the following options. Then select Automatic and Done Note: Select Circulate to maintain higher humidity. Note: If the screen is locked, touch MENU and select Security Settings, select Change Lock Mode. 4. Setting the system Touch SYSTEM to display the following options. Then select Cool and Done 5. Setting the preferences Touch MENU to display the following options. Then select Preference > Advanced Preferences. On each screen, make changes as needed, save the changes. 9

11 Preferences Settings Scheduling Options Non-Programmable Temperature Indication Scale Fahrenheit Heating and Cooling System Changeover Manual Temperature Limits Min Cool 50F; Max Heat 45F Keypad Lockout Partially Locked Clock Format 12 Hour Daylight Saving Time Off Indoor Display Offset Temperature 0F; Humidity 0% 6. Setting the date and time Touch Set the date and time or the current date and time to display the following options. Then change time and date. 10

12 7. Setting Wi-Fi Touch MENU to display the following settings. Then select Wi-Fi Setup. Select your Wi-Fi network, type your password. When the Wi-Fi has been connected successfully, your thermostat MAC ID and CRC numbers will be displayed on the screen. 11

13 8. Registering your thermostat online Visit to setup your thermostat for remote access. When your account has been created successfully, you will be able to access your thermostat remotely with your address and account password. You can monitor and control the cellar temperature anywhere. You can set up notifications of low & high temperature and low & high humidity. 12

14 Care Guide In general, always unplug system or disconnect power while doing care. 1. Condenser Coil Cleaning Clean the condenser coil regularly. Coil may need to be cleaned at least every 6 months. Use a vacuum cleaner with an extended attachment to clean the coil when it is dusty or dirty. 2. Condensate Removing Remove the excessive condensate if it is accumulated in the wine cellar under high humidity conditions. 13

15 User s Troubleshooting This Troubleshooting Chart is not prepared to replace the training required for a professional refrigeration service person, not is it comprehensive. Complaint Possible Causes Response 1. Unit not running a. Power cord not plugged b. No power from supply c. Incorrect or loose wirings d. Low voltage e. Setting higher than ambient temperature f. Waiting for cut-in g. Defrost light blinking h. Compressor light blinking i. Defective controller i. Call service for diagnosis 2. Unit not starting, but temperature rising high 3. Temperature fluctuating 4. Temperature high, unit stopping and starting normally 5. Temperature high, unit stopping and starting with short running time 6. Temperature high or not cooling and running continually a. Anti-short cycle a. Reset AC a. Check power cord b. Check receptacle and fuses c. Check all wirings and connections d. Contact an authorized electrician e. Lower temperature setting f. Wait g. Unit is under defrost mode h. Unit is under anti-short cycle delay a. Air probe a. When using an air probe, the wine bottle temperature is mainly controlled by the average air temperature. If the set-point is 55 F with the differential 4F, the cooling unit turns on at 59 F of air temperature (It may be higher than 59 F if it is in anti-short cycle or defrost) and turns off at 55 F of air temperature. The average air temperature is 57 F, and then the wine temperature is around 57+/- 0.5 F. The air is light enough to change so quickly that it maintains relatively constant average temperature that would prevent wine bottle temperature from fluctuating. a. Temperature setting high a. Lower the setting a. Air probe touching the evaporator coil, displaying temperature ok b. Air probe in cold-air supply, displaying temperature ok c. Failed controller and probe a. Improper cellar insulation & seal b. Cellar too large c. Ambient temperature too high d. Exhaust restricted a. Move the air probe away from the evaporator b. Move the air probe away from the cold-air supply c. Call service for diagnosis a. Check insulation, gasket and door opening b. Check for excessive size c. Check installation location d. Leave minimum 3 feet clearance for the hot air exhaust side and leave 14

16 7. Unit running too long 8. Condenser fan running but compressor not running 9. Compressor running but condenser fan not running 10.Temperature high, compressor stopping and starting but very short running time 11.Evaporator fan running too long 12. Evaporator fan running but condensing unit not running 13.Temperature low 14.Evaporator freezing up e. Malfunctioning fans f. Evaporator or condenser airflow g. Dirty Condenser h. Iced evaporator i. Refrigeration system restriction j. Refrigerant leak k. Undercharge or overcharge l. Failed components a. Improper cellar insulation & seal b. Exhaust restricted c. Cellar too large d. Ambient temperature > 90 F e. Dirty Condenser f. Improper condenser air flow a. Incorrect or loose wirings b. Failed components c. Liquid refrigerant in the compressor a. Fan blade stuck b. Incorrect or loose wirings c. Failed motors d. Fan cycle control a. Failed components b. Improper condenser airflow c. Dirty condenser d. Overcharge of refrigerant e. Discharge or suction pressure too high a. Post-compressor fan running mode for humidity modulation a. Incorrect or loose wirings b. Failed components c. Low refrigerant a. Low temperature setting b. Low ambient temperature c. Air probe fault d. Temperature controller fault a. Evaporator air flow restriction b. Condenser air flow restriction minimum 1 foot clearance for the ambient air intake side e. Check for both evaporator and condenser fans f. Check for air restrictions, air shortcirculation, grille directions g. Clean condenser h. Defrost and reset temperature i. Call service j. Call service k. Call service l. Check compressor windings, start relay and overload protector a. Check insulation, gasket and door opening b. Leave minimum 3 feet clearance for the hot air exhaust side and leave minimum 1 foot clearance for the ambient air intake side c. Check for excessive size d. Check for installation location e. Clean condenser f. Check for fan and air short circulation a. Check all wirings and connections b. Check start relay, start capacitor, overload protector, compressor. c. Call service. a. Check for proper clearance b. Check all wirings c. Call service d. Check for setting a. Check compressor windings, start relay and overload protector. b. Check for condenser fan c. Clean condenser d. Call service for removing refrigerant e. Call service for information a. Reset FON a. Check all wirings and connections b. Check start relay, start capacitor, overload protector, compressor. c. Call service a. Raise the setting b. Move to another location c. Check probe connections or change a new one d. Change a new one a. Check for fans and CFM b. Check for fans and CFM 15

17 15.Water leak 16.Excessive condensate in wine cellar 17.Condensate inside ducts 18.Condensate outside ducts 19.Circuit tripping 20.Noisy operation c. Not stopping due to air leak, high ambient temperature or low temperature setting d. Defective controller or probe e. Low ambient temperature f. Initially working then stopping, moisture in the system g. Refrigerant low or leaking h. Expansion valve blockage a. Air leak in the wine cellar causing excessive condensate b. High humidity causing excessive condensate c. Evaporator air flow restriction d. Drain restricted or unit not level, and water overflowing e. Drip tray leak (No overflow but leak) a. Air leak in the wine cellar causing excessive condensate b. High humidity causing excessive condensate c. Drain restricted a. Drain line restricted b. Continually running not stopping c. Too cold supply air a. Duct not insulated b. High humidity c. Too cold supply air a. Incorrect fuse or breaker b. Incorrect wirings c. Failed components a. Mounting area not firm b. Loose parts c. Compressor overloaded due to high ambient temperatures or airflow restriction d. Defective components c. Check for seal, door opening, ambient temperature and temperature setting d. Check for controller and probe e. Change defrost settings f. Call service g. Call service h. Call service a. Check for air leak b. Use drain line c. Check supply air flow or air TD d. Clean the drip tray and drain line e. Seal the leak using silicone sealant a. Check for any air leak b. Use drain line c. Clean the drip tray and drain line a. Check for drain b. raise temperature setting or increase defrost c. Increase air flow or raise temperature setting a. Check for insulation b. Use dehumidifier c. Increase air flow or raise temperature setting a. Check for proper fuse or breaker b. Check for wirings and connections c. Call service a. Add support to improve installation b. Check fan blades, bearings, washers, tubing contact and loose screws. c. Check for airflow d. Call service for checking internal loose, inadequate lubrication and incorrect wirings 16

18 Installer s Instructions WARNING Do not use a ground fault interrupter (GFI). A dedicated circuit is required. Federal law requires that CELLARTEC split cooling systems be installed by an EPA certified refrigeration technician. 1. General Instructions CELLARTEC split system is shipped as components and is ready for use only after a certified refrigeration technician has properly installed the system. Proper installation is critical. Apex can only warrant the quality of the components. The installation and proper operation of the system must be warranted by the installer. Installation of the system must be done in accordance with all state and local building and electrical codes. The condensing unit and evaporator unit are connected by a liquid line and an insulated suction line that are supplied by the installer. These lines must be properly sized for the distance between the two units. After the units and lines are connected, the system must be checked for restriction, pressurization and leak. Then the system must be evacuate and charged with refrigerant. Refrigerant amount will vary depending on the length of line set. Parts included: Touch-screen Thermostat Evaporator Unit Liquid Filter Liquid Indicator (liquid line solenoid valve and expansion valve are installed) Condensing Unit (discharge, suction valves and pressure controls are installed) 17

19 Parts not included: Liquid line copper tubing Suction line copper tubing CAUTION Liquid and suction line locations may differ from that they are shown below, please check on the units for proper installations. NOTE To prepare rough-in, leave minimum 4 clearances for electrical wiring and refrigeration piping. Model No. CT14TSA CT14TSA-LA CT13TSA CT13TSA-LA CT12TSA CT12TSA-LA CT34TSA CT34TSA-LA CT1TSA CT1TSA-LA WM-120SFCA 22-7/8 x 18-1/4 x 39-1/8 19-9/16 x 14-15/16 x 16-5/8 x 18 Cond Unit ( ) L x W x H WM-250SCUR 18 x 14 x 12 WM- 250SCUR-LA 18 x 14 x 12 WM-450SCUR 18 x 14 x 12 WM- 450SCUR-LA 18 x 14 x 12 WM-650SCUR 24 x 18 x 18 WM- 650SCUR-LA 24 x 18 x 18 WM-850SCUR 24 x 18 x 18 WM- 850SCUR-LA 24 x 18 x 18 Evap Unit ( ) W x D x H E1 x E2 x F1 x F2 WM-25SFCA 15-15/16 x 12-7/16 x 20-1/4 12-3/4 x 8-7/8 x 12-1/4 x 9-3/4 WM-25SFCA 15-15/16 x 12-7/16 x 20-1/4 12-3/4 x 8-7/8 x 12-1/4 x 9-3/4 WM-45SFCA 20-7/8 x 15-5/8 x 25-1/ /16 x 12-1/16 x 14 x 12 WM-45SFCA 20-7/8 x 15-5/8 x 25-1/ /16 x 12-1/16 x 14 x 12 WM-65SFCA 20-7/8 x 15-5/8 x 30-1/ /16 x 12-1/16 x 14 x 16 WM-65SFCA 20-7/8 x 15-5/8 x 30-1/ /16 x 12-1/16 x 14 x 16 WM-85SFCA 22-7/8 x 18-1/4 x 39-1/8 19-9/16 x 14-15/16 x 16-5/8 x 18 WM-85SFCA 22-7/8 x 18-1/4 x 39-1/8 19-9/16 x 14-15/16 x 16-5/8 x 18 WM-120SFCA 22-7/8 x 18-1/4 x 39-1/8 19-9/16 x 14-15/16 x 16-5/8 x 18 WM- 1203SCUR 24 x 18 x 18 WM- 1203SCUR-LA 24 x 18 x 18 Electrical Rating Evap Unit / Cond Unit 115V-60HZ-1A 115V-60HZ-5A 115V-60HZ-1A 115V-60HZ-6A 115V-60HZ-2A 115V-60HZ-6A 115V-60HZ-2A 115V-60HZ-7A 115V-60HZ-2A 115V-60HZ-12A 115V-60HZ-2A 115V-60HZ-13A 115V-60HZ-2.5A 115V-60HZ-15A 115V-60HZ-2.5A 115V-60HZ-16A 115V-60HZ-2.5A 220V-60HZ-15A 115V-60HZ-2.5A 220V-60HZ-16A Min Circuit Ampacity Weight (lb) Evap Unit / Cond Unit 20A 35 / 40 20A 35 / 40 20A 42 / 60 20A 42 / 60 30A 48 / 90 30A 48 / 90 30A 54 / A 54 / 115 Evap / Cond 10A / 20A Evap / Cond 10A / 20A 58 / /

20 Fig. 3 Thermostat (4-1/2" W x 3-1/2" H x 7/8 D) Fig. 4 WM-25~120SFCA Evaporator Unit 19

21 Fig. 5 WM-250~450SCUR Condensing Unit Fig. 6 WM-650~1203SCUR Condensing Unit 20

22 Fig. 7 WM-Liquid Indicator Fig. 8 WM-Liquid Filter 2. Thermostat Installation 1) The thermostat with a built-in air probe can be installed in the wine room 5 ft above the floor in an area with good air circulation. 3. Evaporator Unit Location 1) WM-25~120SFCA evaporator units shall be installed for floor mount with the supply air at the top and return air on the bottom. It can be installed inside the wine racks. 2) Air supply shall be unobstructed minimum 12 ; air return shall be unobstructed minimum 6. 3) There is a gravity drain system, so the unit shall be installed level or with a slight slope downward the drain connection and the drain line shall be installed slope down toward the drain. If rise-up is necessary, a condensation pump must be used. 4. Condensing Unit Location CAUTION Low ambient condition kit is required if the temperature will be below 50 F. 1) Place the condensing units WM-250~1203SCUR in a properly ventilated location. Otherwise, heat exhausted by the condensing unit will build up and the cooling system will not operate properly. 2) Condensing unit shall be elevated to avoid possible flooding and shaded from direct sun. It shall not be exposed to temperatures higher than 110 F or lower than 50 F. 3) Leave minimum 5 ft clearance for the air exhaust side and leave minimum 1 foot clearance for the air intake side. 21

23 5. Refrigeration Piping and Leak Testing NOTE The line connector sizes of liquid filter and indicator, the valve connector sizes of condensing unit or the line connector sizes of evaporator unit may not be the same as the listed refrigeration line sizes. If the condensing unit is installed above the evaporator unit, use the suction line one size smaller. Expansion and solenoid valves have been installed on the liquid line in the evaporator unit. The line sizes and refrigerant charges are listed as follows. Model No. CT14TSA CT14TSA-LA CT13TSA CT13TSA-LA CT12TSA CT12TSA-LA CT34TSA CT34TSA-LA CT1TSA CT1TSA-LA Equivalent Line Set Liquid Line Suction Line Drain Line Recommended Initial Charge <= 75 FT 1/4 OD 3/8 OD 7/8 MPT R134a / 19 OZ <= 75 FT 1/4 OD 1/2 OD 7/8 MPT R134a / 26 OZ <= 75 FT 1/4 OD 1/2 OD 7/8 MPT R134a / 32 OZ <= 75 FT 3/8 OD 5/8 OD 7/8 MPT R134a / 40 OZ <= 75 FT 3/8 OD 7/8 OD 7/8 MPT R134a / 56 OZ 1) The piping starts from à condensing unit s receiver discharge valve à liquid filter à liquid indicator à liquid line à to evaporator unit s liquid line connection (assembled with solenoid valve and expansion valve) à suction line connection à insulated suction line à to condensing unit s suction valve. 2) If the line set exceeds 75 ft long, use both inverted U trap and suction accumulator to prevent liquid from flooding back to the compressor. 3) If the condensing unit is located below the evaporator unit, use inverted U trap to prevent liquid from flooding back to the compressor. If the elevation difference is more than 10 ft, use both inverted U trap and suction accumulator. 4) If the condensing unit is located more than 10 ft above the evaporator unit, use U trap to aid oil returning to the compressor. 5) Complete pipe brazing, check solenoid valve and expansion valve restrictions and perform leak testing. 6) Hook up the drain line and check if water drains. 6. Connecting Electrical Wires Connect all electrical components using the wiring diagrams in accordance with all state and local codes. 7. Evacuating, Charging and Starting the System 22

24 1-Manifold High or Low Pressure Hose; 2-Receiver Discharge or Compressor Suction Port; 3-Liquid or Suction Line; 4-Pressure Control; BACK POSITION FRONT POSITION MIDDLE POSITION Fig. 9 ROTALOCK Valve Operation BACK POSITION FRONT POSITION MIDDLE POSITION Fig. 10 Base Valve Operation Back Position: Normal operation, manifold port is closed. Front Position: Storage operation, liquid or suction line connection is closed. Middle Position: Installation operation, all ports are open. NOTE The recommended initial charges are used for reference only, always use the superheat, subcooling and pressure readings to charge refrigerant properly. If the unit is equipped with a low ambient condition kit and installed in the summer, add 15% more refrigerant. If the low ambient condition kit is used, turn off the compressor before power the condensing unit. Only turn on the compressor after the condensing unit has been powered for 12 hours. 1) Turn both discharge and suction valves in the middle positions. 2) Connect the manifold high or low pressure hose to the discharge or suction valve and connect it to a vacuum pump. 3) Open the manifold high and low pressure valves to evacuate the system. 23

25 4) Close the manifold high and low pressure valves and switch it to a charging scale. 5) Open the manifold high and low pressure valves to charge the system using the recommended initial charge. 6) Close the manifold high and low pressure valves. Turn on the power to start the system. 7) Check the following temperatures and pressures. 8. Adjusting and Completing the Installation 1) Checking pressure control settings I. The encapsulated pressure control (if applicable) Suction pressure setting (fixed): Cut in = 32 psig; Cut out = 10 psig; Fig. 11 Fixed Pressure Control II. The adjustable pressure control (if applicable for pump-down) Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig It is necessary to adjust the setting in the field to reach the correct cycle time. A. P70 Single/Dual Control 24

26 B. PS2 Dual Control Fig. 12 Adjustable Pressure Control III. Low ambient condition kit (if applicable) A. The crankcase heater The crankcase heater is installed at the bottom of the compressor and shall be turned on all the time. The heater is self-regulated. B. The condenser fan control The condenser fan control is installed at the high side. It closes on rise of pressure. It is necessary to adjust the setting in the field to avoid fan short cycle. Head pressure setting: Cut in=170 psig; Cut out=110 psig; Differential=60 psig; Fig. 13 Condenser Fan Cycle Control 25

27 2) A fan speed control may be used to adjust the air flow to achieve the specified CFM. The fan will run from the minimum speed to full speed with the control knob at the lowest and highest speed position. To adjust the minimum speed, turn control knob to the lowest speed position, then rotate the setting (located on the side or front) clockwise to decrease the minimum speed or counter-clockwise to increase the minimum speed. The minimum speed should be adjusted until it supplies the required CFM. Fig. 14 Fan Speed Control 3) The subcooling at the condensing unit shall be around 10 F. The charge may be complete when there are no more bubbles forming in the liquid indicator. 4) The head pressure shall be 120 ~ 150 psig at 70 ~ 90 F condensing unit operating temperatures. 5) The evaporator s constant pressure expansion valve is set around 30 ~ 35 psig (35 ~ 40 F) at factory. This pressure setting gives a dew point to maintain the proper humidity for storing wine. 6) The temperature split across the evaporator shall be 8 ~ 10 F at 55 F wine cellar temperature. 7) Again, you must verify if the superheat at the evaporator unit is 9 ~ 18 F at 55 F ~ 65 F wine cellar temperatures. 8) If the superheat is high, check the subcooling first to see if the refrigerant charge is sufficient. If the charge is not sufficient, add more refrigerant (Liquid must always be charged into the hide side when the compressor runs). If the charge is good, then increase the evaporator suction pressure by turning the hex nut (5/16 ) clockwise. 9) If the superheat is low, then decrease the evaporator suction pressure by turning the hex nut (5/16 ) counter-clockwise. 26

28 Fig. 15 Expansion Valve 10) Turn both discharge and suction valves in the back positions. 11) Disconnect the manifold. 9. Pressure, Superheat and Subcooling Readings CAUTION To read properly, the service valves must be in the middle positions. Complaint 1) High suction pressure and low head pressure Zero superheat and zero subcooling 2) High suction pressure and low head pressure Low superheat and low subcooling 3) High suction pressure and high head pressure Low superheat and high subcooling 4) High to normal suction pressure and high head pressure Low subcooling 5) High suction pressure and high head pressure Low superheat and low subcooling 6) High suction pressure and high head pressure High superheat 7) Low suction pressure and low head pressure High superheat and low subcooling 8) Low suction pressure and low to normal head pressure High superheat and high subcooling Possible Causes 1) Compressor may be bad 2) Expansion valve opened, too much oil 3) Overcharge 4) Non-condensable gas 5) Air restricted, dirty condenser, bad condenser fans 6) High cellar temperature, high evaporator load 7) Undercharge 8) Liquid line restricted after receiver, solenoid valve restricted 27

29 9) Low suction pressure and low head pressure Normal to high superheat and low subcooling 10) Low suction pressure and low head pressure Low superheat and low subcooling 11) Low suction pressure and low to normal head pressure High superheat and normal to high subcooling 12) Low suction pressure and normal head pressure High superheat and normal subcooling 13) Low suction pressure and high head pressure High superheat and high subcooling 14) Low suction pressure and high head pressure High superheat and high subcooling 15) low to normal suction pressure and high head pressure Normal to high superheat and high subcooling 9) Suction line restricted 10) Air restricted at evaporator, evaporator iced 11) Evaporator restricted 12) Expansion valve restricted 13) Both evaporator and condenser restricted; liquid and suction lines connected wrong 14) Liquid line restricted before receiver 15) Condenser restricted 10. Condensing Unit Troubleshooting 1) Incorrect power supply 2) Incorrect or loose wirings 3) Failed components Unit not running 4) Low pressure switch shutting down the system 5) high pressure switch shutting down the system 1) Check for proper voltage 2) Check all wirings and connections 3) Check start relay, start capacitor, overload protector, compressor. 4) Check for system restriction or low refrigerant 5) Check for the condenser fan 28

30 Electrical Wiring Diagrams CAUTION Hidden lines are the field wirings Use minimum 14 gauge wires for power lines. Use 18 gauge wires for thermostat and sensor. If equipped with low ambient condition kit, use low ambient temperature wiring diagrams. A safety switch is always recommended for the condensing unit. NOTE W is 24VAC output for HEATING relay. Fig. 16 CT14~13TSA Electrical Wiring Diagram 29

31 Fig. 17 CT12~1TSA Electrical Wiring Diagram Fig. 18 CT14~13TSA-LA Electrical Wiring Diagram 30

32 Fig. 19 CT12~1TSA-LA Electrical Wiring Diagram 31

33 Warranty Thank you for choosing an Apex cooling unit. Please enter the complete model and serial numbers in the space provided: Model Serial No. Attach your purchase receipt to this owner s manual. 1. Limited Warranty APEX warrants its products, parts only, to be free from defects due to workmanship or materials under normal use and service for twelve months after the initial sale. If the product is defective due to workmanship or materials, is removed within twelve months of the initial sale and is returned to APEX, in the original shipping carton, shipping prepaid, APEX will at its option, repair or replace the product free of charge. This warranty constitutes the entire warranty of the APEX with respect to its products and is in lieu of all other warranties, express or implied, including any of fitness for a particular purpose. In no event shall APEX be responsible for any consequential damages what is so ever. Any modification of APEX products shall void this warranty. Service under Warranty This service is provided to customers within the continental UNITED STATES only. APEX cooling units are warranted to produce the stated number of BTU/H. While every effort has been made to provide accurate guidelines, APEX can not warranty its units to cool a particular enclosure. In case of failure, APEX cooling units must be repaired by the factory or its authorized agent. Repairs or modifications made by anyone else will void the warranty. Shall an APEX cooling unit fail, contact the dealer for instructions, do not return the unit to the factory without authorization from APEX. If the unit requires repair, re-pack it in the original shipping carton and return it to the factory, shipping prepaid. APEX will not accept COD shipments. If the unit is determined to be faulty and is within the twelve month warranty period APEX will, at its discretion, 32

34 repair or replace the unit and return it free of charge to the original retail customer. If the unit is found to be in good working order, or beyond the initial twelve month period, it will be returned freight collect. 2. Limitation of Implied Warranty APEX S SOLE LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO, AT OUR OPTION, REPAIRING OR REPLACING OF UNIT. APEX SHALL NOT BE LIABLE FOR: DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN THE UNIT, DAMAGES BASED UPON INCONVENIENCE, LOSS OF USE OF THE UNIT, LOSS OF TIME OR COMMERCIAL LOSS, ANY OUTER DAMAGES, WHETHER INCIDENTAL, CONSEQUENTIAL OR OTHERWISE. THIS WARRANTY IS EXCLUSIBE AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR INPLIED, INCLUDING BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. While great effort has been made to provide accurate guidelines APEX cannot warrant its units to properly cool a particular enclosure. Customers are cautioned that enclosure construction, unit location and many other factors can affect the operation and performance of the unit. There for suitability of the unit for a specific enclosure or application must be determined by the customer and cannot be warranted by APEX. 33